处理下载失败

api/tasks/tasks.py

@@ -34,8 +34,14 @@ def version_release_task(packed_channels, version_id=None, version=None):  # 一
 @shared_task
 def channel_build_one(version=None, channel=None, data=None):
     url = ChannelPackage.apk_url('', version)
-    r = requests.get(url, stream=True)
-    info_logger.debug(url)
+    for _ in range(5):
+        try:
+            r = requests.get(url, stream=True)
+            info_logger.debug(url)
+            if r.content:
+                break
+        except:
+            info_logger.debug('第%s下载失败%s：', _, url)
     chn_pkg = ChannelPackage(r.content, version)
     build_one_channel(chn_pkg, channel)